CMailServer, a small and easy-to-use mail server software and web mail server software, will help you build your own mail server over Internet. It enables you to send and receive emails across the Internet or within the LAN and has support for client email applications such as Outlook, Eudora etc. Also supports Hotmail-like web mail service. The web mail function is based on ASP scripts. So you can customize your web mail interface freely. It also supports multiple domain names and SMTP authentication.